Yes, sir, i believe i can :approve: . I'll look into netbooting NetBSD on a LC475 from a floppy this weekend. Custom ROMs are fine, but maybe not really needed just yet.
It probably would be best and least intrusive to use a virtual machine to run the needed network services. What kind of VM can you run? Can you run VMWare virtual machines?
Getting the BrickOven to run stable under load (that means, providing proper networking connections, proper power supply, electromagnetic shielding, stable and plenty ram), that is the real problem. The software side could be done by every two-bit Unix admin.